CFH
EN-SCI Cryogenic Frost Point Hygrometer (CFH)
The EN-SCI CFH is the benchmark balloon-borne sonde for high-accuracy, in-situ atmospheric water vapor profiling from the surface through the mid-atmosphere. Utilizing established Trifluoromethane (R23) cryogen technology, this robust instrument has a proven history of delivering reference-quality data for demanding research applications worldwide.
Key Features:
- Reference-Quality Accuracy & Sensitivity (ppmv levels)
- Proven R23-Based Chilled Mirror Technology
- Lightweight & Low Power for Balloon Deployments
- Ascent/Descent Profiling Capability
- Ozonesonde Compatible & Software Supported
Primary Applications:
- Atmospheric Profiling & Process Studies
- Cloud Physics & In-Cloud Measurements
- Sensor Validation & Intercomparison
Technical Specifications
| CFH | |
|---|---|
| Cryogen Used | Trifluoromethane (R23) |
| Measurement Technique | Temp-controlled Chilled Mirror |
| Measured Parameter | Ambient Frost Point |
| Derived Parameters | Relative Humidity, Mixing Ratio |
| Uncertainty Measurement | 4% in tropical lower troposphere, 10% in middle stratosphere, 9% in tropopause |
| Operational Range | 0 - 25 km (all climates) |
| Instrument Dimensions | 7.6 x 7.6 x 13.3 cm |
| Flight Box Dimensions | 39 x 39 x 39 cm |
| Package Weight (without coolant) | < 400 g |
What’s Included:
- EN-SCI CFH Sonde Unit
- Durable Polystyrene Foam Flight Box
- Lithium Metal Batteries
- Operator Manual
- (Note: Requires user-supplied Trifluoromethane (R23) cryogen.)
Required Preparation Supplies:
Pre-flight preparation using the CFH Full Test Kit (sold separately) is essential for operation. Test kit consumable supplies can be replenished here.
Warranty: EN-SCI warrants this product to be free of defects in material and workmanship for up to one year from the shipped date or first flight, whichever comes first. See full warranty for details and limitations.
Expert technical support via email and phone is included to assist with your operations.
